Digital Commons Network^™

Establishment Of A Chebyshev-Dependent Inhomogeneous Second Order Differential Equation For The Applied Physics-Related Boubaker-Turki Polynomials, Micahel Dada, O. Bamidele Awojoyogbe, Maximilian Hasler, Karem B. Ben Mahmoud, Amine Bannour

Applications and Applied Mathematics: An International Journal (AAM)

This paper proposes Chebyshev-dependent inhomogeneous second order differential equation for the m-Boubaker polynomials (or Boubaker-Turki polynomials). This differential equation is also presented as a guide to applied physics studies. A concrete example is given through an attempt to solve the Bloch NMR flow equation inside blood vessels.

The Evolution Of Reciprocity In Sizable Human Groups, Casey G. Rothschild

Economics Faculty Scholarship

The scale and complexity of human cooperation is an important and unresolved evo- lutionary puzzle. This article uses the finitely repeated n person Prisoners’ Dilemma game to illustrate how sapience can greatly enhance group-selection effects and lead to the evolutionary stability of cooperation in large groups. This affords a simple and direct explanation of the human “exception.”

Engineering Division, Daureen Nesdill

Sci-Tech News

No abstract provided.

Effects Of Olfactory And Visual Predators On Nest Success And Nest-Site Selection Of Waterfowl In North Dakota, Jennifer Borgo

Green Canyon Environmental Research Area, Logan Utah

No abstract provided.

New Complexities In The Low-State Line Profiles Of Am Herculis, S. Kafka, T. Ribeiro, R. Baptista, R. K. Honeycutt, Jeff W. Robertson

Faculty Publications - Physical & Earth Sciences

When accretion temporarily ceases in the polar AM Her, the emission-line profiles are known to develop several distinct components, whose origin remains poorly understood. The new low-state spectra reported here have a more favorable combination of spectral resolution (R ~ 4500), time resolution (~ 3 minute exposures), and S/N than earlier work, revealing additional details of the orbital dependence of the line profiles. The central strong feature of Hα is found to be composed of two components of similar strength, one having K ~ 100 km s-1 and phased with the motion of the secondary star, the other having little …

Ttl Based Packet Marking For Ip Traceback, Vamsi Paruchuri, Arjan Durresi, Sriram Chellappan

Computer Science Faculty Research & Creative Works

Distributed Denial of Service Attacks continue to pose major threats to the Internet. in order to traceback attack sources (i.e., IP addresses), a well-studied approach is Probabilistic Packet Marking (PPM), where each intermediate router of a packet marks it with a certain probability, enabling a victim host to traceback the attack source. in a recent study, we showed how attackers can take advantage of probabilistic nature of packet markings in existing PPM schemes to create spoofed marks, hence compromising traceback. in this paper, we propose a new PPM scheme called TTL-Based PPM (TPM) scheme, where each packet is marked with …

Insights, Winter, 2008, Utah State University

Discovery Magazine

Bi-annual alumni newsletter for the College of Science of Utah State University in Logan.

Mapping Reality Into Virtual Worlds, Josh Mcfarlane

Computer Science and Computer Engineering Undergraduate Honors Theses

As virtual worlds become more prevalent, they become increasingly useful as a means of information dissemination. This thesis examines the possible connections between real world objects and their virtual world counterparts. We look at how, by attaching sensors to an object, or by using a smart object with embedded sensors, the information can be relayed to a server. From this information, it will be possible to create a duplicate object in the virtual world and have it mirror the real world object in terms of state and movement. Almost all current solutions for remotely viewing a room or area are …

Wanted: Scitech News Editor

Sci-Tech News

No abstract provided.

Acer Enews 12 December 2008, Acer

ACER eNews Archive 2001-2013

No abstract provided.

Daily Variation And Predicting Stock Market Returns For The Frankfurter Börse (Stock Market), Jeffrey E. Jarrett, Janne Schilling

College of Business Faculty Publications

In this article we test the random walk hypothesis in the German daily stock prices by means of a unit root test and the development of an ARIMA model for prediction. The results show that the time series of daily stock returns for a stratified random sample of German firms listed on the stock exchange of Frankfurt exhibit unit roots. Also, we find that one may predict changes in the returns to these listed stocks. These time series exhibit properties which are forecast able and provide the intelligent data analysts' methods to better predict the directive of individual stock returns …

Investigation Of The Interactions Of Cationic Polyelectrolytes With Anionic Surfactants: Effects Of Polymer, Surfactant And Solution Properties, Lisa Renee Huisinga

Dissertations

The intent of this research is to explore and understand the effects that a range of polymer, surfactant and solution parameters have on the interaction of oppositely-charged polymers and surfactants. Cationic polysaccharides were chosen for this research because they are known to interact with anionic surfactants, and they offer a wide range of adjustable polymer properties, including molecular weight, charge substitution, and backbone structure. Cationic poly(vinylpyridinium hydrochloride) polymers were chosen for these studies because they provide the opportunity to explore the effects of charge position on the interaction of cationic polymers with anionic surfactants and how this influences the mechanism …

Examination Of An Aloe Vera Galacturonate Polysaccharide Capable Of In Situ Gelation For The Controlled Release Of Protein Therapeutics, Shawn David Mcconaughy

Dissertations

A therapeutic delivery platform has been investigated with the ultimate goal of designing a sustained protein release matrix utilizing an in-situ gelling, acidic polysaccharide derived from the Aloe vera plant. The Aloe vera polysaccharide (AvP) has been examined in order to determine how chemical composition, structure, molecular weight and solution behavior affect gelation and protein/peptide delivery. Correlations are drawn between structural characteristics and solution behavior in order to determine the impact of polymer conformation and solvation on gel formation under conditions designed to simulate nasal applications. Steady state and dynamic rheology, classic and dynamic light scattering, zeta potential, pulse field …

Dispersion States And Surface Characteristics Of Physically Blended Polyhedral Oligomeric Silsesquioxane/Polymer Hybrid Nanocomposites, Rahul Misra

Dissertations

Control of dispersion and segregation states of nanostructured additives is one of the biggest challenges in realizing the optimum potential of high-performance hybrid polymer nanocomposites. Polyhedral oligomeric silsesquioxane (POSS) nanostructured chemicals, with their hybrid organic-inorganic nature and flexible functionalization with a variety of organic substituents, yield possibilities to control dispersion and tune compatibility in a wide range of polymer systems. The overall goal of this research is to investigate the fundamental parameters that influence the dispersion and segregation states of POSS nanostructured chemicals and to understand chain dynamics and conformations in physically blended POSS hybrid polymer nanocomposites (HPNC's). Multiple structural …

Synthesis, Propagation Kinetics, And Characterization Of D,L-Lactide-Based Polyols And Polyurethanes Therefrom, Scott Joseph Moravek

Dissertations

In order to expand the usefulness of degradable polyesters, degradable polyurethanes were synthesized using a mixed polyol system including poly(D,L-lactideco- glycolide) (PLGA), a well-known degradable polyester. Two isocyanate systems, methyl 2,6-diisocyantocaproate (LDI) and dicyclohexylmethane-4,4'- diisocyanate(Hi2MDI), were studied in order to achieve optimal physical and thermal properties of the thermoplastic polyurethane (TPU) while maintaining degradablity. The LDI based systems had excellent physical properties as well as thermal properties that may make them suitable for biomedical devices. The H12MDI based TPUs also had excellent physical properties as well as a higher melting temperature. The aforementioned TPUs were synthesized in small batches. Another …

The Principal's Role In Teacher Retention, Sametra Danyal Chisolm

Dissertations

As efforts are made to identify factors contributing to teachers leaving or staying in the teaching profession, teacher retention continues to pose a challenge for school administrators. Factors such as principal behaviors, principal leadership, school climate/teacher morale, professional development opportunities, and teacher mentoring programs seem to positively impact teachers' decisions to remain in the profession.

The purpose of this study was to gather data to determine whether principal behaviors, principal leadership, school climate/teacher morale, professional development opportunities, and teacher mentoring programs affect teacher retention. A questionnaire, adapted from the Mecklenburg Citizens for Public Education (formally Charlotte Advocates for Education) research …

The Perceptions Of The Effectiveness Of The Phoenix Alternative Program, Jason Dethor Laffitte

Dissertations

Many school districts throughout the United States utilize alternative schools for students who have not been successful in a traditional school setting. The Phoenix Program is a second chance alternative school in Mobile, Alabama that provides educational opportunities to students who are at risk of dropping out or school or under a long-term suspension from a regular school program.

This study was conducted to determine the perceptions of the effectiveness of the Phoenix Program on students who have been suspended from their assigned school for a long term. Participants in this study included 36 principals and assistant principals, 30 students, …

Factors That Contribute To A Successful Secondary Vocational Education Program In The State Of Mississippi, Erin Leigh Parker

Dissertations

This study was designed to assess and identify factors that make a vocational program successful. Using qualitative methods for collection and analysis of data, vocational instructors and students in programs identified to be successful were interviewed to better depict the classroom setting, teachers, methods, etc. of these successful programs. Participants included instructors of and students enrolled in secondary vocational programs in the state of Mississippi identified to be most successful according to C-PAS test scores in each of the following training areas: Building Trades (carpentry), Business and Computer Technology, Marketing Management Technology, and Allied Health. MS-CPAS test scores were analyzed …

The Relationship Between African American Students' Self-Beliefs And Beliefs About Teachers And Academic Outcomes And Disciplinary Referrals, James Matthew Thompson

Dissertations

This research study addressed a facet of the academic achievement gap regarding students' beliefs. The specific area that was examined is African American students' self-belief and beliefs about their teachers, while Caucasian students were used as a comparative group. The sample consisted of 34 African American and 65 Caucasian fifth-grade students from a southeastern public school district. The purpose of the study was to explore correlations between beliefs and African American students' academic outcomes. The theoretical foundations regarding beliefs, cultural context, and stereotype threat that were explored in this study addressed the variables located in Chapter III: Methodology. Additionally, these …

The Relationship Between Principals' Leadership Self-Efficacy, Student Achievement And School Performance, Robert Louis Williams

Dissertations

The two major components of school accountability, under the Mississippi Schools Accountability System, are growth expectation and school achievement. Mississippi schools are assigned a school performance classification based upon student achievement and whether schools did not meet, met, or exceeded their growth expectation. The primary purpose of this study was to determine if there is a statistically significant relationship between principals' ratings of self-efficacy, school performance, and school growth status. In addition, this study sought to determine if there is a statistically significant relationship between principals' ratings of delegatee performance, school performance and school growth status.

The participants for this …

Effectiveness Of Before And After-School Tutoring Programs As Measured By The Mississippi Curriculum Test, Patricia Marie Goyette

Dissertations

In the era of high-stakes testing and increased accountability, the state of Mississippi has implemented the Mississippi Curriculum Test (MCT) in alignment with No Child Left Behind. Students scoring basic or minimal on the MCT are considered to be working below grade level. In response, many districts have begun tutoring students before or after school in an attempt to increase student learning. The purpose of this study was to determine if students who participated in out-of-school tutoring programs during one school year exhibited significantly more growth, as defined in the Mississippi Student Achievement Act and the No Child Left Behind …

Factors Related To Nonacademic Adjustment Of Freshmen Students, Nykela Horne Jackson

Dissertations

Student retention remains a major concern of higher education institutions. With decreasing state funding, higher education institutions have implemented creative strategies and methods to recruit students. Once students are recruited it is critical that they be retained. Research has confirmed that student withdrawals can be attributed to the lack of successful transition and adjustment to the college environment. Numerous studies have focused on how demographic factors (socioeconomic status, race, employment, and parental education level) affect retention with the major focus on academic adjustment. Current research has shown that nonacademic adjustment (social adjustment, personal/emotional adjustment, and institutional attachment) plays a significant …

Are The Math Scores Of Students Who Are Taught Mathematics Utilizing The Methods Endorsed By The Alabama Math, Science, And Technology Initiative Affected?, Brenda Elise Jolly

Dissertations

Eighth-grade mathematics scores from 21 schools were compared pre-inception and post-inception of the Alabama Mathematics, Science, and Technology Initiative (AMSTI). Only the scores from schools which had 80% of their mathematics and science teachers trained at one Summer Institute were used, as these were considered to be true AMSTI schools. Results found the effects of AMSTI to be not statistically significant.

The second part of this research was conducted based upon 256 surveys from teachers attending their second Summer Institute of ASMTI training. Results found many school systems may hamper teachers' ability to plan and execute AMSTI lessons due to …

Homotopy Perturbation Method And Padé Approximants For Solving Flierl-Petviashivili Equation, Syed T. Mohynd-Din, Muhammad A. Noor

Applications and Applied Mathematics: An International Journal (AAM)

In this paper, we present a reliable combination of homotopy perturbation method and Padé approximants to investigate the Flierl-Petviashivili (FP) equation. The approach introduces a new transformation necessary for the conversion of the Flierl-Petviashivili equation to a first order initial value problem and a reliable framework designed to overcome the difficulty of the singular point at x = 0. The proposed homotopy perturbation method is applied to the reformulated first order initial value problem which leads the solution in terms of transformed variable. The desired series solution is obtained by making use of the inverse transformation. The suggested algorithm may …

Estimating Risk Under Interval Uncertainty: Sequential And Parallel Algorithms, Vladik Kreinovich, Hung T. Nguyen, Songsak Sriboonchitta

Departmental Technical Reports (CS)

In traditional econometrics, the quality of an individual investment -- and of the investment portfolio -- is characterized by its expected return and its risk (variance). For an individual investment or portfolio, we can estimate the future expected return and a future risk by tracing the returns x₁, ..., x_n of this investment (and/or similar investments) over the past years, and computing the statistical characteristics based on these returns. The return (per unit investment) is defined as the selling of the corresponding financial instrument at the ends of, e.g., a one-year period, divided by the buying price …

Mathematical Justification Of Spectral/Covariance Techniques: On The Example Of Arc Detection, Jan Beck, David Nemir, Vladik Kreinovich

Departmental Technical Reports (CS)

Detecting arcing faults is an important but difficult-to-solve practical problem. Many existing methods of arc detection are based upon acquiring a signal that is proportional to current and then making an analysis of the signal's power spectrum (or, equivalently, its covariance function). Since the power spectrum, i.e., the absolute values of the Fourier transform, carries only partial information about the signal, a natural question is: why should we restrict ourselves to the use of this partial information? A related question is caused by the fact that even the most efficient methods still miss some arcing faults and/or lead to false …

Computing With Tensors: Potential Applications Of Physics-Motivated Mathematics To Computer Science, Martine Ceberio, Vladik Kreinovich

Departmental Technical Reports (CS)

In this paper, we explain what are tensors and how tensors can help in computing.

Partial Automorphism Semigroups, Jennifer Chubb, Valentina Harizanov, Andrei Morozov, Sarah Pingrey, Eric Ufferman

Mathematics

We study the relationship between algebraic structures and their inverse semigroups of partial automorphisms. We consider a variety of classes of natural structures including equivalence structures, orderings, Boolean algebras, and relatively complemented distributive lattices. For certain subsemigroups of these inverse semigroups, isomorphism (elementary equivalence) of the subsemigroups yields isomorphism (elementary equivalence) of the underlying structures. We also prove that for some classes of computable structures, we can reconstruct a computable structure, up to computable isomorphism, from the isomorphism type of its inverse semigroup of computable partial automorphisms.

Fisheries Research Report No. 182 - A Likelihood Analysis Of Non-Indigenous Marine Species Introduction To Fifteen Ports In Western Australia, Justin I. Mcdonald

Fisheries Research Reports

As an island continent, Australia is heavily dependent upon maritime transport with over 95% of its imports and exports transported by ship (Australian State of the Environment Committee, 2001). With about one third of Australia’s coastline, Western Australia ranks fourth of the six states and territory in the number of known non-indigenous marine species.

In this study fifteen ports in Western Australia were assessed on the potential for non-indigenous marine species to become introduced through ballast water and biofouling. The overall vesselmediated incursion risk to Western Australian ports was calculated by summing the relative incursion threat posed by visits to …

After-School Programs And Reading Achievement, Jamie M. Mack

All Graduate Projects

The relationship between participating in an after-school program and accelerating reading levels was studied. Seventy-three fifth-grade students were pre- and posttested using the Gates-MacGinitie Reading Test to determine reading levels. Thirty-six of the 73 students participated in an on-going 21" Century Academic After-School Program. The other 37 did not. The results showed that there was no statistical difference between participating in an after-school program and accelerating reading levels. The study also broke down the data by gender. These results showed that there was no statistical difference between males who participated and males who did not; however, there was a significant …